Leader Prime LED Replacement Hello, this tutorial is for replacing the LED in Leader Class [RotF] Optimus Prime. I have done this on my RotF, Buster, and Striker Prime and it's pretty flawless. Now onto the tutoria: 1. Gather your supplies: - 3mm LED - Soldering iron - Flux paste - Solder Most of this stuff can be found at Radio Shack with the exception of the 3mm LED which I got from ebay for like $5 for 50 LEDs: 2. Disassemble the head. After you take the screws off you just pry them apart: 3. Get around that chest! Lift up the chest pieces so they're out of the way. I sometimes take them off completely: 4. Look! A LED! Tilt the red piece forward with the LED and you’ll see a screw. Unscrew that and now the 2 silver pieces under the red LED holder can come apart. Be very careful as you have to pry the 2 silver parts with a bit of force: 5. Getting to the LED. Once the little red piece is out just pry it apart. It separates with little force: 6. Expose the LED. Inside you'll notice the LED one contact is covered with a black sleeve. What I do is cut through this sleeve with an X-Acto knife. Take it off to expose the contact on the LED: 7. Removed the factory LED. Cut off the old LED right right above the old solder points. This ensures you don’t have to use wire strippers on the already short wires and you also have some left over solder that will help you attach the new one: 8. Test the new LED. Afterwards, test your new LED just touch the contact points on the wire to the LED. If it doesn't work turn it around. Once it lights up, I grab a black sharpie and mark the wire from the LED that will go to the black wire: 9. Install the new LED. Solder your new LED and cover one side with electrical tape: 10. Finishing touches. Test to make sure its working after you solder. Reassemble everything and enjoy!